200644642 has 32 divisors (see below), whose sum is σ = 349017984. Its totient is φ = 85497600.

The previous prime is 200644627. The next prime is 200644643. The reversal of 200644642 is 246446002.

200644642 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 200644642.

It is not an unprimeable number, because it can be changed into a prime (200644643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 108667 + ... + 110497.

It is an arithmetic number, because the mean of its divisors is an integer number (10906812).

Almost surely, 2^200644642 is an apocalyptic number.

200644642 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

200644642 is a deficient number, since it is larger than the sum of its proper divisors (148373342).

200644642 is a wasteful number, since it uses less digits than its factorization.

200644642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2154.

The product of its (nonzero) digits is 9216, while the sum is 28.

The square root of 200644642 is about 14164.9088242742. The cubic root of 200644642 is about 585.4311886661.

The spelling of 200644642 in words is "two hundred million, six hundred forty-four thousand, six hundred forty-two".